Finding the Fourth Proportional to 318,924.08, 478,403.58 and 129,356.30
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Solution
The fourth proportional to 318,924.08, 478,403.58 and 129,356.30 is: 194,041.53
Step by Step Solution
- Step 1: Write the proportion equation
318,924.08 : 478,403.58 = 129,356.30 : x - Step 2: Convert to fraction form
318,924.08/478,403.58 = 129,356.30/x - Step 3: Cross multiply
318,924.08x = 478,403.58 × 129,356.30 - Step 4: Simplify right side
318,924.08x = 61,884,517,015.55 - Step 5: Solve for x
x = 61,884,517,015.55/318,924.08 - Step 6: Final answer
x = 194,041.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.